On Sat, Apr 16, 2022 at 04:40:58PM +1000, Chris Angelico wrote:
> > Which conditions would you drop? There's not that many, really. Five.
> > Six if you include the "no cycles" requirement for the DAG, which I
> > think is so obviously necessary that it is barely worth mentioning.
>
> This is *ex
On Sat, Apr 16, 2022 at 05:56:13PM +1200, Greg Ewing wrote:
> On 16/04/22 12:56 pm, Steven D'Aprano wrote:
> >If you exclude models of MI which are logically incoherent and
> >inconsistent, (such as Python's prior to version 2.3), then Python's
> >model of MI is objectively as complete as you can g
On Sat, Apr 16, 2022 at 05:27:57PM +1200, Greg Ewing wrote:
> On 15/04/22 10:37 pm, Steven D'Aprano wrote:
> >If you look at languages that implement MI, and pick the implementations
> >which allow it with the fewest restrictions, then that is "full MI".
>
> >I believe that Python (and other lang
On Sat, 16 Apr 2022 at 20:28, Steven D'Aprano wrote:
> So please stop falsely accusing me of "No True Scotsman" bullshit. If
> you keep doing it, I will know you're not arguing in good faith.
Fine. I'll accuse you, instead, of using "full MI" to mean "the best
MI system that Steven D'Aprano can c
I don't really care what terms like "Full MI" or "True MI" are intended to
mean. Python and MANY other programming languages that allow classes to
have multiple parents, use a method resolution order (MRO) to decide which
same-named method from a complex inheritance tree to use in a given call.
If
On Sun, 17 Apr 2022 at 02:23, David Mertz, Ph.D. wrote:
> One thing I do find a bête noire is the silly claim, that Chris repeats, that
> inheritance expresses "Is-A" relationships. It was torture in the 1990s
> hearing about vehicles and trucks and sedans as if that had something to do
> with
On Sat, Apr 16, 2022, 12:26 PM Chris Angelico > wrote:
> A button IS a widget.
> A horizontal box IS a box.
> A box IS a container.
> A container IS a widget.
>
> Class hierarchies in graphical systems are just as much based on those
> is-a relationships as any of those "horrible metaphors" you ma
The problem of assigning init arguments as attributes has appeared several
times in the past (
https://mail.python.org/archives/list/python-ideas@python.org/message/VLI3DOFA5VWMGJMJGRDC7JZTRKEPPZNU/
was the most recent we could find) and is already handled in dataclasses.
Lately, discussing this t
On Sat, Apr 16, 2022 at 12:23:10PM -0400, David Mertz, Ph.D. wrote:
> R doesn't have inheritance, it's not OOP,
R is OOP and always has been. All values, arrays, functions etc in R are
objects. Even expressions are objects. And it has inheritance.
https://cran.r-project.org/doc/manuals/r-releas
R has changed a bit since 2005. My article was from then:
https://gnosis.cx/publish/programming/R3.html
I'm not trying to quibble about R, but simple to point out that what often
mystified as "deep" about OOP is actually banal and fairly trivial.
That might be how Alan Kay originally saw OOP. He
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